Failures Of Vision

Question 1

what illusions are there

Answer 1

motion
colour interpretation
coller after effect
motion induced blindness

Question 2

define motion illusions

Answer 2

caused by movement of the eye

show how contrast and motion are processed in the visual system

Question 3

define colour interpretation illusions

Answer 3

chormaticity - colours remains the same regardless of its luminance
surrounding colours and interpretation of scene means we can interpret the same colours as different
ie rubix

Question 4

define colour after effect illusion

Answer 4

fading of present colours cause visualisation of non existant colour
visual system adapts for consistency over long periods of time and therefore signals for the opposite
ie green dot not present in pink

Question 5

define motion induced blindness illusion

Answer 5

bronnen et al 2001
occurs due to discarding info
duration and frequency of the disappearance of info is based on
target contrast- brighter = more disappear
target size - smaller = more disappear
target flicker - if flickers = more disappear

Question 6

what are the benefits of illusions

Answer 6

they show how our visual system can fail to represent reality
understand the mechanisms behind visual processing